Boinc claims "Remote desktop in use; disabling GPU tasks" when I'm not remoting in.

[hucker75]

Describe the bug
I have a Windows 11 machine I can access remotely using a 3rd party app (Remote Utilities) which does not usually suspend GPU computation in Boinc. I'm running two instances of Boinc (so I can make one suspend the CPU when something else is running, but the other continues with the GPU). But just recently it's throwing the error message (on startup, without even connecting Remote Utilities) of "Remote desktop in use; disabling GPU tasks". Why has it suddenly started doing this? I've not changed anything. Is Boinc detecting it's in use? Or has something physically stopped the GPU being accessible by Boinc?

Steps To Reproduce
May not be reproducable as it used to work here! Let me know if some logs could help.

1. Run two Boinc instances.
2. Set the first to do a CPU project.
3. Set the second to do a GPU project.

System Information

• OS: Windows 11
• BOINC Version: 7.20.2

[AenBleidd]

@hucker75, looks like smth else physically made GPUs unusable for BOINC. Not sure BOINC logs will show smth useful in this case.
I'd suggest you to look into Windows Event logs and check for GPU drivers crash or some similar errors

[AenBleidd]

I made some additional investigation. It could be an issue of Windows itself. Could you please check if there was any Windows updates installed recently?

[hucker75]

The GPU is ok for the 1st instance of Boinc, so I can't see it being a Windows problem. I assume one instance of Boinc couldn't stop the other seeing it? I've made the 1st instance use the GPU and the 2nd use the CPU and all is fine.

[hucker75]

I can find nothing of interest in the Windows event log. The GPU was not failed at the point Boinc refused to use it, as I could simply tell the other Boinc instance to use it instead. It seems very strange one Boinc instance was given information I was using remote desktop, but the other one wasn't. I had no remote connection to the machine at that point, ever since bootup. And when I do it's a 3rd party one which doesn't prevent GPU usage.